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Our take on the Rockford Fosgate R600X5by Crutchfield's Buck Pomerantz

Rockford Fosgate performance in a rugged package – the Prime Series R600X5 5-channel amp can drive 4 speakers with 50 watts RMS each, while powering a subwoofer with up to 300 watts RMS. Not worried about your rear speakers? You can bridge the amp to 2-channel mode to drive a pair of high-performance components with 150 watts RMS each, while still sending that 300 watts to a sub. You can use the high- and low-pass filters and Rockford Fosgate's famous Punch boost to get maximum performance from your speakers and sub. And speaker-level inputs let you hook this amp up to almost any system, even a factory stereo.

Rockford Fosgate power for your whole system

Rockford Fosgate performance in a rugged package – the Prime Series R600X5 5-channel amp can drive 4 speakers with 50 watts RMS each, while powering a subwoofer with up to 300 watts RMS. Not worried about your rear speakers? You can bridge the amp to 2-channel mode to drive a pair of high-performance components with 150 watts RMS each, while still sending that 300 watts to a sub. You can use the high- and low-pass filters and Rockford Fosgate's famous Punch boost to get maximum performance from your speakers and sub. And speaker-level inputs let you hook this amp up to almost any system, even a factory stereo.

Rugged performance and value

The R600X5's heavy cast-aluminum chassis efficiently draws damaging heat away from its internal components, ensuring reliable, long-term play. The amp's built-in sensors keep track of the output current and power supply temperature, ensuring that plunging impedances (they change constantly during play) or even a short circuit won't hurt anything. Your driver's seat will become your favorite place for listening to music once this Prime amp goes to work.

Great 5-channel amp

I installed this in a 2003 Jeep Wrangler to compliment my aftermarket head unit. As any Jeep owner knows, it's almost impossible to hear the radio at highway speeds with the top down, even with an aftermarket head unit. While I initially wanted to install it under the driver's seat, I decided to install it in an "add-a-trunk" in the rear of the Jeep. For those that don't know what that is, it's a bolt-in 'trunk' that gives you a somewhat secure space when the tailgate is locked. I did this because the amp wouldn't have been 100% hidden under the seat. Since the top stays down most of the time in the Jeep - and also since it's a soft-top and has zero security with the top up - it needed to be completely hidden from view.
So the problem with this was having to run all. those. wires. from the very back of the Jeep to the front. I pulled up the carpets and hid them from view as best I could. I even used black sleeving around the wires as the exited the console and ran up behind the dashboard. Since the carpeting is black, you can't really see them at first glance. It took quite a few days to do it but the results are worth it.
This was my first amp install so once again, kudos to Crutchfield tech support for being patient with all my questions. It's a little intimidating because there's a lot of wires and a lot of adjustability on the amp itself. But once I learned what was what, it was pretty straightforward... just tedious.

Pros:Plenty of power
Lots of adjustability
Perfect if you don't want separate amps for subs and speakers

Cons:Check the signal wire for continuity BEFORE installation
instructions are better than most, but still lacking... especially for a novice

0 of 0 found this helpful

Rockford Fosgate R600X5

Paired this bad boy with 2 JL Audio 12WXv2 subs, 2 Polk Audio DXi691, and two Polk Audio DXi521 driven by a simple EQ with a headphone jack for my phone. The sound gets serious really fast. You could get more power to 1 sub or power them separately, but cruising in my '67 Lincoln Continental has never been so fun.

Pros:

Cons:

1 of 1 found this helpful

Great amp for stock head unit

Jim from Hilliard, OH on 3/26/2017

great amp if you want to keep your stock head unit. It has high ampedence inputs, so with a few cheap adapters you can have high performance sound and keep all of the features of your stock unit.

Pros:high ampedence inputs, 5 channels, remote bass control

Cons:none

1 of 1 found this helpful

Best All - In - One Amp

Perfect all-in-one amplifier to power the entire system in my truck. The staff at Crutchfield was professional, helpful and knowledgable in outfitting me with upgraded speakers and sub, along with selecting this amp to support the entire system.
The Rockford Fosgate 5-channel amp was an easy install (for professionals) and offers adjustable control over the entire system. More than enough power to sound great at a very reasonable price.

Pros:Perfect amp to power system in truck, affordable, great price, dependable brand and easy installation.

Good performance for the money

I am usually not a Rockford Fosgate fan. After research, and little else in this price point, i went ahead with this. I have not been disappointed. Low level input range matches most head units that will be used with an amp at this price point. Fit very well under the back seat of my Silverado.

Great multichannel sub

I replaced a monoblock fosgate 400w amp with this one. The monoblock was driving 2 8in fosgate 2 ohm speakers wired in series. I upgraded my door speakers and tweeters to the fosgate P165-SE component speakers so needed a multichannel amp to drive them. This amp does a great job driving the component speakers AND drives the subs much better than the monoblock amp, even though its wired to 300w on the subs and the monoblock was 400w. The system sounds great and the amp has a small footprint. Plenty of power for my system.

Pros:Good power, easy to install, included remote is nice. Crutchfield support was great throughout the process

Rockford Fosgate R600x5

Bought this for my 16 year-old son as a Christmas gift to install in his Mazda Tribute suv. He was previously running factory speakers off of an in-dash powered CD player. We replaced 4 speakers, installed this amplifier, and hooked up a 12" Kicker subwoofer mounted in a box. Needless to say, he is impressed with the power, the much improved music clarity, and the bass. We are still fine-tuning the cross-overs and gain adjustments, but really like the amplifier. Our Crutchfield advisor was very helpful with the purchase, the installation instructions were informative, and the order arrived within 3 days. I felt like the price for this sized amplifier was reasonable and we are very pleased with the purchase.

Pros:Provided certification from Rockford Fosgate says the amplifier tested at 726 watts vs. 600 as advertised. A lot of fine-tuning adjustment available for the user. Very good unit for systems running only one amplifier.

Rockford Fosgate 5-Channel Amp

This is an excellent purchase for the person who's looking to match treble with bass using only one amp.
Like most Rockford amps, the advertised power is about 17% less than the power stated on the Certificate provided in the box; therefore, this amp is really putting out 60 x 4 @ 4 ohms and 350 x 1 @ 2 ohms. The crossover functions and bass boost remote help tune the system for a well-balanced mix for all types of music.

Product Research

Features

Overview: The Rockford Fosgate Prime R600X5 is a 5-channel
amplifier, with full range two 2-channel amps and a mono subwoofer amp built
into one chassis. The front and rear amps are class A/B with identical but
independent controls (gain, crossover, Punch EQ). The subwoofer amp is class D
with its own gain, crossover, phase, and Punch EQ controls. The front and rear
channels are bridgeable, so the amp can also be used in 4-channel or 3-channel
modes.

CEA 2006 Compliant: The R600X5's power ratings and signal
to noise ratio are measured according to the uniform standards advocated by the
Consumer Electronics Association (CEA). This allows you to accurately compare
these specifications for all CEA 2006-compliant amplifiers, even from different
brands. Manufacturers who adhere to these standards can display the CEA 2006 logo
on their products and packaging. CEA2006 Specifications for this amplifier are:

LED Indicator: The amplifier is equipped with an LED
power/protect indicator. The LED illuminates blue when the unit is turned
on. It illuminates red if the thermal or short circuit protection circuit
is engaged, and the amplifier will automatically turn off.

Mounting: The amplifier can be mounted vertically or
horizontally using the supplied mounting screws. The amplifier should never
be mounted in an engine compartment as this will void the warranty.

Controls

Gain Controls: The front, rear, and subwoofer amplifier
channels have independent gain controls. Each rotary control is labeled 1 to
11 and has a sensitivity range of 150mV to 4V when using the RCA inputs, 450mV
to 12V when using the speaker level inputs.

Remote Punch Level Control: The R600X5 includes a wired
Remote Punch Level Control, linked to the gain control of the subwoofer
amplifier. The module allows you to remotely control the output level of the
sub from the dash or center console. The Remote Punch Level Control features
a rotary dial, and comes with mounting hardware and an 18' cable.

Note: The Remote Punch Level Control measures
approximately 1-3/4" wide (2-5/8" including the mounting
flange) x 3/4" high x 1-5/8" deep (2-1/8" deep
including the knob and wiring).

Crossover: Each section of the amplifier has independent
crossover controls:

Punch EQ: Each section of the amplifier also has independent
Punch EQ controls:

Front: 0 (flat), +6 dB, or +12 dB;
centered at 45 Hz

Rear: 0 (flat), +6 dB, or +12 dB;
centered at 45 Hz

Subwoofer: adjustable from 0 (flat)
to +12dB; centered at 45Hz

Phase: The subwoofer amp has a 2-position phase switch to allow
you to easily reverse the output phase of the amplifier, choose 0° or 180° to match
the rest of your vehicle's speaker system.

Input Switch:

2-CH: when using only the front
inputs

4-CH: when using the front and
rear inputs

5-CH: when using the front, rear,
and sub inputs

Connections

Power Terminals: The power and ground terminals are nickel-plated
set screw terminals and will accommodate up to 4 gauge power and ground wires.

Fuse: An external 80-amp fuse (not
included) must be installed on the power wire at the
battery. If a wiring kit is used which includes a fuse
with a value other than 80-amps, the original should be
replaced with a 80-amp fuse.

Remote Terminal: The remote turn-on terminal is a nickel-plated
set screw terminal that will accommodate up to an 8 AWG wire. It's used to remotely
turn the amplifier on and off.

Speaker Terminals: The five pair of speaker outputs are
nickel-plated set screw terminals what will accommodate up to 8 AWG speaker
wire.

Speaker Level Input: Two speaker level input harnesses are
included, making it easier to add the amplifier to a factory radio or to a receiver
with no preamp outputs.

Wired Remote: An RJ-25 jack is used with the included Remote
Punch Level Control.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Accessories

Q & A

Customer Q&A

Crutchfield askedWhy did you buy this?

5 channel and speaker level inputs[ George Mar 30, 2017 ]

Cost of scratch & dent version of amp. After searching for an amp and looking at some local shops, once I found this discounted version with full factory warranty and fully tested by Crutchfield, the price was worth a chance....we shall see if it was a good idea...[ S Nov 06, 2016 ]

I wanted a five-channel amp to power speakers and later a subwoofer. Otis was my advisor and said it was a good one. It was on sale, so I went with it to limit the work I need to do later.Otis' Bio: http://www.crutchfield.com/Support/Bio.aspx?bio=212[ Michael Feb 12, 2016 ]

11 questions already asked

Like Todd alluded to with his answer above, the Rockford R600X5 amp includes speaker-level inputs making it easier to add the amplifier to a factory radio with no preamp outputs. For more details or to discuss further, please feel free to contact an Advisor directly by phone (888.955.6000) or online chat. Thanks! My bio: https://www.crutchfield.com/advisors/larry[ Larry Aug 08, 2017 ] Staff

No, an LOC is not necessary. This amp can use both pre-amp and speaker level inputs.[ Todd Aug 07, 2017 ]

Thanks for your question. For information on selecting the best amp/sub combo I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences and help you make the best choice for your system.[ Kenny Jul 25, 2017 ] Staff

I haven't measured and calculated this on mine, but the manufacturer specs list it as >200. I come from the old days of Orion HCCA type equipment and as a replacement for my Honda system, this amp handled the conversion well with great quality. I run multi way 6-1/2's in the 4 doors and a 10" RF sub all from this amp. It is well worth the price.[ Douglas Jun 09, 2017 ]

SeparatesDepends on how you wire up the speakers. If you know ohms law you can calculate and wire it up in several different ways to get different loads. Since these are Dual Voice Coil it is similar to having 2x the speakers. The R600X5 is good down to 2 ohms. So if you wired the subs in series to the second voice coil and then those to the AMP in parallel, you will end up with 2ohms and maximize what the amp is capable of. In my case I only had one sub with dual voice coil, so I planned on wiring in parallel only so I could get the extra power from the amp. Ohms law is handy to know in these situations.[ Douglas Jun 09, 2017 ]

Thanks for your question. For information on selecting the best sub(s) for this Rockford amp, I would recommend reaching out to an Advisor directly by phone (1-800-324-9695) or online chat. They will be able to help determine the best subwoofer choice for your specific system and budget.[ Larry Mar 20, 2017 ] Staff

That is exactly how I am running mine. I have 4 R165X3 door speakers (4 ohms each) running to the 4 channels, then I have a 2 ohm 10" P1 sub to the 5th channel. You actually get 2x the power by having a 2 ohm load instead of 4 so I recommend it. The amp has nice built in crossovers for front rear and sub as well.[ Douglas Feb 27, 2016 ]

Yes you can run 1-4 at 4 ohms and sub at 2 or 4 ohms[ SALVATORE A Feb 25, 2016 ]

That's what the web site says on the specs, I have not installed this yet , but its the way I am planning on running it.[ Michael paul Feb 24, 2016 ]

You can use the 4-channel setting and the sub will still work when wired to the subwoofer channel on the amp, it's just that you won't have individual crossover/filter controls on the subwoofer channel in that case. If you wanted that ability you'd need to use an RCA splitter to split the rear outputs and run a separate RCA cable to the subwoofer input on the amp. This Monster RCA "Y" adapter would work well for that: http://www.crutchfield.com/p_119ILJRY2F/Monster-Cable-1-Male-2-Female-RCA-Y-adapter.html[ Larry Dec 26, 2015 ] Staff

The first four channels have HP/LP crossovers and are bridgeable to 2 channels. 150w x 2 RMS. The 5th channel IS a dedicated sub channel with 200w RMS @ 4 ohms and 300w RMS @ 2ohms.
Presently I have a four channel Axxera mini amp running my front speakers (Polk Audio components in all four doors), and the 600x5 in 3 channel running my mid-bass Kicker 6 3/4s and a Rockford 12" HX2 (on the dedicated 5th channel).
In your set-up, if you wanted to add some mid-bass, (80Hz to 250Hz), you could feasibly do so by using that 5th channel. It will NOT be in stereo, but it could be done.
Or, if the worst happens and you fry your dedicated sub amplifier, you have a backup in the 5th channel.
If you're asking about that 2ch/4ch/5ch switch, that's for input. The 5 channels on this amp can be used solely from a 2 channel input, (unlike my digital Axxera amps, lol).Feel free to ask me more questions anytime.
Fritz[ James Dec 03, 2015 ]

I forwarded your question to an Advisor and they responded with the following: The RMS power output per channel on this amplifier is 50 watts RMS at 4 ohms and 75 watts RMS at 2 ohms. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat.[ Krissy Dec 21, 2014 ] Staff

May not be a good one to ask since I myself thought it was short on power & punch so I returned it to Crutchfield[ GREG Oct 08, 2014 ]

That depends on the output of your Subs. If they are 150 each then it would work but it is always better to be a little over powered on the amp side of things that way it does not have to work as hard. If I drive a 300 watts in Subs then I want no less than a 400 watt amp. 5 Channel amps are nice and cost more but you could buy 1 amp for your speakers and buy another just for the amps. I use Crutchfields house brand amps and they work great. You can buy 2 house brand amps for less than you would pay for a 5 channel amp. That will leave you money to buy cables and wire[ DUKE Oct 08, 2014 ]